Product description
If you have a microcontroller without an ADC, or need one with higher precision, the ADS1115 is a very good option. It provides 16-bit resolution with up to 860 samples per second over I2C. The sampling rate is programmable and can be reduced to as low as 8 measurements per second. The chip can be configured as four single-ended channels or two differential channels. As a bonus, it also includes a PGA (programmable gain amplifier) with up to 16× gain, allowing small signals to be amplified into the appropriate range.
The ADC can be powered and interfaced with logic levels from 2 to 5 V and is easy to use. The board includes voltage filtering to achieve good measurement quality with minimal noise. The ADS1115 features a stable internal voltage reference and an internal oscillator. The I2C address can be changed to one of four alternatives, allowing up to four ADS1115 devices to be connected on a single I2C bus, providing 16 single-ended or eight differential inputs.
The holes have a 2.54 mm pitch, and a pin header (not mounted) is included. Mounting holes make it easy to secure the board in an enclosure or on other PCBs. This version also includes Qwiic connectors for quick and convenient solderless connections.
Specifications:
- Supply voltage: 2.0 V to 5.5 V
- Logic level: 3.3 or 5 V
- Low current consumption: 150 µA, single-shot mode with automatic shutdown
- Programmable data rate: 8 to 860 samples per second
- I2C address: 0x48–0x4B
- Internal low-drift voltage reference
- Internal oscillator
- Internal PGA (Programmable Gain Amplifier)
- I2C interface with selectable addresses
- Four single-ended inputs or two differential inputs
- Programmable comparator
- This board/chip uses 7-bit I2C addresses between 0x48 and 0x4B, selectable with jumpers
- IC: Texas Instruments ADS1115
